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J. D. CARDINELL.

WATERPROOF ENVELOP- APPLICATION FILED JAN. 23. 19:9.

Patented Dec. 2, 1919.

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Specification of Letters Patent.

Patented Dec. 2, 1919.

' Application filed January as, 1919. Seria1 No.2"/2,666.

I Envelops; and I do declare the following to be a full, clear, andexact description of the invention, such as w1ll enable others skilledin the art to which it appertains to make and use the same.

My invention has for its object to provide a protecting envelop for datarelating to numerous articles, and to provide novel means for holdingthe envelop against acci-' dental opening and for attaching it to thearticle to which it relates. With this object in View, the inventionresides in the construction and arrangement herein described andclaimed.

Figure 1 of the accompanying drawings is a perspective view showing theinvention applied to a shell.

Fig. 2 is a View similar to Fig. 1., showing another manner of attachingthe envelop.

Fig. 3 is a perspective view of the envelop before sealing.

F 1 is a transverse section on the plane of the line H of Fig. 3.

Fig. 5 is a plan View of the blank from which the envelop is formed. 7Fig. 6 is a perspective view of a different form of the invention.

In the manufacture of the improved envelop, a single blank 1 ofwaterproof paper or any other preferred material is employed,

' said blank consisting of a rectangular back area 2, a pair ofrectangular flaps 3 integral with the side edges of said back area andadapted to form the front of the envelop, a pair of sealing flaps 4integral with the ends of the back area 2 and tabs 5 integral with theouter ends of the sealing flaps. As seen in Fig. 5 the edges .6 of theflaps 4: may diverge inwardly and coincide with the ends of the flaps 3at the points 7, these points being spaced outwardly from the side edgesof the back '2. By this provision, seals 8 are provided in the anglesbetween the flaps 4 and 3, but in some instances (see Fig. 6) theseseals may be omitted. Either simultaneously with the stamping operationwhich cuts the blank 1, or at any other suitable time, metal eyes 10 aresecured in the tabs 5, and these tabs are foldable outwardly from thesealing flaps 1, on the weakened lines 11. In some instances, the metaleyes might be eliminated and in lieu thereof openings merely punchedthrough the tabs 5 in which case the latter will be reinforced by paperor the like securedaround the openings, but in most cases said metaleyes are preferable.

Upon the lines 12 which separate the back area 2 from the flaps 3, theseflaps are folded forwardly into overlapping relation to form the frontof the envelop, the two flaps being glued or otherwise suitably securedtogether. It will be observed by ref erence to Fig. 2 that after thisfolding operation, the seals 8 extend beyond the lines 13 upon which thesealing flaps 4 are folded,

and that when the flaps a are folded upon the envelop front, the sealswill be correspondingly folded. When the flaps 4tand seals 8 are nowsecured to the front of the envelop by means of coatings of glue orother viscous material, the ends of the envelop will be sealed inwater-tight manner. The tabs 5 may be bent outwardly from the flaps 1and the cord 14 by means of which the package 15 is tied, may be passedthrough the eyes 10 and tied as seen in Figs.

1 and 2. The sealed envelop may contain important data relating to thecontents of the article or may contain other subject matter having thesame destination, and it will be obvious that the device may beconstructed in numerous sizes and of any preferred material. In mostcases, the material is waterproofed in some adequate manner but whenconditions are encountered which do not require such precautions, theyneed not of course be taken.

The device is of particular advantage-for use in connection with shellsand projectiles since important technical data may be contained in theenvelop and tied thereto, giving information of value as to the strengthof the powder charge, etc. This data is protected against tearing,soiling, etc., and due to the fact that the tabs are tied together,there is no danger of loss due to the envelop opening by accident.

From the foregoing, taken in connection with the accompanying drawing,it will be seen that my invention is highly eflicient and in every waydesirable. Since probably the best results are obtained from the detailsdistabs on the free ends of said flaps having 7 eyes to receive the cordby means 01" which 10 the envelop is tied upon the article, whereby V toprotect the envelop against opening.

In testimony whereof I have hereunto set my hand.

JOHN D; GARDINELL.

